A kind of odd mental model for storing state in a system.

Pure functions that take inputs and produce outputs.

To store state, loop back function's output to the inputs of a new instance of the function.

This model is not too dissimilar from how memory in chips works.

This model more clearly permits a forking, ever-branching space of possibility.

A branchial space of possibility, where the current state of the system is a multi-dimensional cut through the space.

But you could easily do another cut through the space.